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Ski touring in Norway - important information | Varsom.no

Avalanche warning for region Indre Troms Sunday 18.03.2018

Danger level 3 - Considerable avalanche danger

Published:
Be careful in areas with fresh windloaded snow. Avoid lee areas where a persistent weak layer can be hidden in the snow pack. Avalanches are triggered most easily where the snow pack is thin, typically close to ridges and on convex formations.

Avalanche problems

Wind drifted snow (slab avalanches)

You can easily trigger avalanches on many steep slopes. Avalanches can get large enough to bury or even kill you (size 2).

Buried weak layer of new snow

Persistent weak layer (slab avalanches)

You can easily trigger avalanches on some steep slopes. Avalanches can get large enough to bury a car or destroy a small house (size 3). Remote triggering is possible.

Buried weak layer of faceted snow beneath a crust
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Below you can see a description of the current snow cover information and current weather forecast in the mountains. If your observations deviate greatly from what is described here, the warning will not necessarily apply either. Always make your own judgments or stay away from avalanche terrain.

Snow cover (in Norwegian)

Saturday 17. March 2018

Første dagene i mars kom det 7-15 cm snø, både før og etter dette har det vært mye kraftig vind fra SØ. Snøoverflaten preges av fokksnø av ulik hardhet og tykkelse, mens det i høyden også er områder med skare etter mildvær i januar.

Det er observert flere lag med kantkorn over og under skarelag. I enkelte leheng kan det finnes nedføyket overflaterim i skjermet terreng.

Stedvis drønn i skogen og ferske sprekker i snøoverflaten.

Mountain weather

Saturday 17. March 2018

10 mm precipitation, up to 20 mm in the most exposed areas. Moderate gale from southwest, changing to strong breeze from the west during the evening. -11 °C to -4 °C at 1100 m a.s.l. Cloudy.

Sunday 18. March 2018

14 mm precipitation, up to 22 mm in the most exposed areas. Moderate gale from west. -12 °C to -7 °C at 1100 m a.s.l. Cloudy.

Advice

The bulletin is a planning tool and may differ from the actual situation. Always make your own evaluation. To be 100 % avalanche safe, avoid all avalanche terrain.

Avalanche risk assessment

Snøbyger og kraftig vind vil danne ferske fokksnøflak i leheng og andre områder som samler snø. Det ventes store lokale variasjoner i nysnømengde pga. bygevær.
Vær oppmerksom på at fokksnøflakene kan legge seg over vedvarende svake lag med nedføyka overflaterim eller kantkorn. Skred i disse lagene kan bli større og det kan være mulig å fjernutløse skred.
Noen naturlig utløste skred kan forventes.
Avalanche danger scale Important information for ski touring
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